Copilot unable to open browser for gh authentication

### Describe the bug

I asked the agent to create a PR for which it needed github authentication. But when it indicated a browser had been opened and prompted me to enter the given code, I found no browser page opened. It later provided me a link I had to manually click to open the browser page:

### Affected version

GitHub Copilot CLI 1.0.41-0

### Steps to reproduce the behavior

_No response_

### Expected behavior

It should be able to open the browser without manual intervention.

### Additional context

_No response_

Start by reproducing GitHub authentication in GitHub Copilot CLI 1.0.41-0 and trace the browser-opening step described in the report. Done means the authentication flow opens the browser automatically and no longer requires manually clicking the later-provided link.

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